I just installed a prosport 12, and have it all wired up.
I have the correct plug flooded/agm installed, I have a Surepower 1314 but its all unhooked so the 2 banks are seperated. When I plug it into 120VAC the power light comes on but does not start charging. The red light is supposed to come on then go into a charge cycle but all it does is sit with the blue power light on.

Both banks are sitting at 12.5v.

I'm 100% sure I've got it hooked up correctly so polarity shouldn't be an issue.

The blue light is on because your batteries don't need to be charged.
Drain your batteries and then plug it back in and I'm sure it will turn red and start charging.
On mine the red lights shows it charging and the blue light is on once the batteries are fully charged.

Isn't it supposed to charge to 14.6 then drop to 13.3? Thats what the manual says.
Like I said the batteries are around 12.5 so it should come on to charge them to 13.3, or at least show they are ready.
I dunno. I hope its that simple.

I've had a fuse come loose on mine and it didn't even turn on, no lights. Since his light is blue, as is mine when the batteries are fully changed I think his batteries are charged, but I could be wrong. I never actually checked mine with a meter, but they are always charged.

Newty the manual you posted up shows that the model has a green light not blue, is your light blue or green.

leave your radio on all night to drain the battery and then plug your charger in the morning to see if the light turns red.

Update. Even when the ready light came on it still wasn't charging. I decided to double check everything. Turns out there was a bad fuse on the aux side of the charger. Replaced it and everything is working properly now. Thanks guys for the feedback, I appreciat it.